Unreal Engine Issues

Unconverted BP function library does not assign output parameters after function call in a nativized build.

Stub functions generated for unconverted assets as dependencies of nativized assets do not properly handle output parameters (the result is not assigned after the ProcessEvent() call). Suggested fi ...

Lights placed in a Layer that are hidden will not be visible in PIE

Placing any lights in a Layer and marking as hidden will not render when PIE. Layers should only be editor only, even if marked as hidden. Also test in MAIN CL-2685425 where this is showing the sa ...

Copying/pasting a Blueprint static function triggers an ensure and a new parameter in function signature

Crash when adding Rectangle Lights to a game with multiple players while Raytracing is enabled

A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I di ...

Latent Blueprint Functions has incorrect linkage when the FLatentActionInfo is the first argument

When you create a latent function in C++ with the FLatentActionInfo first it will incorrectly set up the linkage for the latent info such that it gets linked to the incoming execution pin of the fun ...

Light components do not appear in the details panel when copy-pasted from a level to a blueprint's component hierarchy

As per the steps to reproduce, copy-pasting light actors from a world outliner into a blueprint's component hierarchy in the blueprint editor will result in the expected light component not to show ...

Zooming with mouse wheel causes camera to jerk if zooming while the camera sets in a function

If a collapsed or new function is opened and the mouse wheel scrolled to zoom the viewport camera in or out while setting in the new function, it will continuously jerk back to the original position ...

Lighting build fail due to failing to open channel for material data

Licensee reports lighting build fails for their specific levels which were created in 4.14.1 then moved to 4.15.1. Workaround: Setting LogLightmassSolver verbose level to Warning can show "Warning ...

Building lighting fails on Linux without Internet connection

Attempting to build lighting will stay at 0% and eventually fail if there is not internet connection for the computer. ...

SubobjectDataSubsystem functions do not show up in blueprint editor.

Licensee was not able to access SubObjectDataSubsystem functions from their blueprint editor, as the functions (such as "GatherSubobjectDataFromInstance") did not show up in the right-click menu and ...